.ck-content {
  font-family:
    Helvetica Neue,
    Helvetica,
    PingFang SC,
    Hiragino Sans GB,
    Microsoft YaHei,
    Arial,
    sans-serif;
  font-size: 16px;
  color: #333;
  line-height: 1.4;

  h2 {
    margin-top: 25px;
    margin-bottom: 10px;
    line-height: 1.2;
  }

  h3 {
    margin-top: 22px;
    margin-bottom: 5px;
    line-height: 1.5;
  }

  h4 {
    margin-top: 16px;
    margin-bottom: 5px;
    line-height: 1.5;
  }

  p {
    margin-top: 8px;
  }

  h2 + p,
  h3 + p,
  h4 + p {
    margin-top: 0;
  }
}
